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authorLinus Torvalds <torvalds@linux-foundation.org>2013-02-21 23:58:40 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-21 23:58:40 +0100
commitb274776c54c320763bc12eb035c0e244f76ccb43 (patch)
treec75b70d0824a7ae029229b19d61884039abf2127 /arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c
parentMerge tag 'fixes-non-critical' of git://git.kernel.org/pub/scm/linux/kernel/g... (diff)
parentMerge tag 'cleanup_for_v3.9_round3' of git://git.infradead.org/users/jcooper/... (diff)
downloadlinux-b274776c54c320763bc12eb035c0e244f76ccb43.tar.xz
linux-b274776c54c320763bc12eb035c0e244f76ccb43.zip
Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups from Arnd Bergmann: "A large number of cleanups, all over the platforms. This is dominated largely by the Samsung platforms (s3c, s5p, exynos) and a few of the others moving code out of arch/arm into more appropriate subsystems. The clocksource and irqchip drivers are now abstracted to the point where platforms that are already cleaned up do not need to even specify the driver they use, it can all get configured from the device tree as we do for normal device drivers. The clocksource changes basically touch every single platform in the process. We further clean up the use of platform specific header files here, with the goal of turning more of the platforms over to being "multiplatform" enabled, which implies that they cannot expose their headers to architecture independent code any more. It is expected that no functional changes are part of the cleanup. The overall reduction in total code lines is mostly the result of removing broken and obsolete code." * tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (133 commits) ARM: mvebu: correct gated clock documentation ARM: kirkwood: add missing include for nsa310 ARM: exynos: move exynos4210-combiner to drivers/irqchip mfd: db8500-prcmu: update resource passing drivers/db8500-cpufreq: delete dangling include ARM: at91: remove NEOCORE 926 board sunxi: Cleanup the reset code and add meaningful registers defines ARM: S3C24XX: header mach/regs-mem.h local ARM: S3C24XX: header mach/regs-power.h local ARM: S3C24XX: header mach/regs-s3c2412-mem.h local ARM: S3C24XX: Remove plat-s3c24xx directory in arch/arm/ ARM: S3C24XX: transform s3c2443 subirqs into new structure ARM: S3C24XX: modify s3c2443 irq init to initialize all irqs ARM: S3C24XX: move s3c2443 irq code to irq.c ARM: S3C24XX: transform s3c2416 irqs into new structure ARM: S3C24XX: modify s3c2416 irq init to initialize all irqs ARM: S3C24XX: move s3c2416 irq init to common irq code ARM: S3C24XX: Modify s3c_irq_wake to use the hwirq property ARM: S3C24XX: Move irq syscore-ops to irq-pm clocksource: always define CLOCKSOURCE_OF_DECLARE ...
Diffstat (limited to 'arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c')
-rw-r--r--arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c b/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c
new file mode 100644
index 000000000000..673781758319
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2006-2007 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ * Vincent Sanders <vince@arm.linux.org.uk>
+ *
+ * S3C2440/S3C2442 CPU PLL tables (12MHz Crystal)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+
+#include <plat/cpu.h>
+#include <plat/cpu-freq-core.h>
+
+static struct cpufreq_frequency_table s3c2440_plls_12[] __initdata = {
+ { .frequency = 75000000, .index = PLLVAL(0x75, 3, 3), }, /* FVco 600.000000 */
+ { .frequency = 80000000, .index = PLLVAL(0x98, 4, 3), }, /* FVco 640.000000 */
+ { .frequency = 90000000, .index = PLLVAL(0x70, 2, 3), }, /* FVco 720.000000 */
+ { .frequency = 100000000, .index = PLLVAL(0x5c, 1, 3), }, /* FVco 800.000000 */
+ { .frequency = 110000000, .index = PLLVAL(0x66, 1, 3), }, /* FVco 880.000000 */
+ { .frequency = 120000000, .index = PLLVAL(0x70, 1, 3), }, /* FVco 960.000000 */
+ { .frequency = 150000000, .index = PLLVAL(0x75, 3, 2), }, /* FVco 600.000000 */
+ { .frequency = 160000000, .index = PLLVAL(0x98, 4, 2), }, /* FVco 640.000000 */
+ { .frequency = 170000000, .index = PLLVAL(0x4d, 1, 2), }, /* FVco 680.000000 */
+ { .frequency = 180000000, .index = PLLVAL(0x70, 2, 2), }, /* FVco 720.000000 */
+ { .frequency = 190000000, .index = PLLVAL(0x57, 1, 2), }, /* FVco 760.000000 */
+ { .frequency = 200000000, .index = PLLVAL(0x5c, 1, 2), }, /* FVco 800.000000 */
+ { .frequency = 210000000, .index = PLLVAL(0x84, 2, 2), }, /* FVco 840.000000 */
+ { .frequency = 220000000, .index = PLLVAL(0x66, 1, 2), }, /* FVco 880.000000 */
+ { .frequency = 230000000, .index = PLLVAL(0x6b, 1, 2), }, /* FVco 920.000000 */
+ { .frequency = 240000000, .index = PLLVAL(0x70, 1, 2), }, /* FVco 960.000000 */
+ { .frequency = 300000000, .index = PLLVAL(0x75, 3, 1), }, /* FVco 600.000000 */
+ { .frequency = 310000000, .index = PLLVAL(0x93, 4, 1), }, /* FVco 620.000000 */
+ { .frequency = 320000000, .index = PLLVAL(0x98, 4, 1), }, /* FVco 640.000000 */
+ { .frequency = 330000000, .index = PLLVAL(0x66, 2, 1), }, /* FVco 660.000000 */
+ { .frequency = 340000000, .index = PLLVAL(0x4d, 1, 1), }, /* FVco 680.000000 */
+ { .frequency = 350000000, .index = PLLVAL(0xa7, 4, 1), }, /* FVco 700.000000 */
+ { .frequency = 360000000, .index = PLLVAL(0x70, 2, 1), }, /* FVco 720.000000 */
+ { .frequency = 370000000, .index = PLLVAL(0xb1, 4, 1), }, /* FVco 740.000000 */
+ { .frequency = 380000000, .index = PLLVAL(0x57, 1, 1), }, /* FVco 760.000000 */
+ { .frequency = 390000000, .index = PLLVAL(0x7a, 2, 1), }, /* FVco 780.000000 */
+ { .frequency = 400000000, .index = PLLVAL(0x5c, 1, 1), }, /* FVco 800.000000 */
+};
+
+static int s3c2440_plls12_add(struct device *dev, struct subsys_interface *sif)
+{
+ struct clk *xtal_clk;
+ unsigned long xtal;
+
+ xtal_clk = clk_get(NULL, "xtal");
+ if (IS_ERR(xtal_clk))
+ return PTR_ERR(xtal_clk);
+
+ xtal = clk_get_rate(xtal_clk);
+ clk_put(xtal_clk);
+
+ if (xtal == 12000000) {
+ printk(KERN_INFO "Using PLL table for 12MHz crystal\n");
+ return s3c_plltab_register(s3c2440_plls_12,
+ ARRAY_SIZE(s3c2440_plls_12));
+ }
+
+ return 0;
+}
+
+static struct subsys_interface s3c2440_plls12_interface = {
+ .name = "s3c2440_plls12",
+ .subsys = &s3c2440_subsys,
+ .add_dev = s3c2440_plls12_add,
+};
+
+static int __init s3c2440_pll_12mhz(void)
+{
+ return subsys_interface_register(&s3c2440_plls12_interface);
+
+}
+arch_initcall(s3c2440_pll_12mhz);
+
+static struct subsys_interface s3c2442_plls12_interface = {
+ .name = "s3c2442_plls12",
+ .subsys = &s3c2442_subsys,
+ .add_dev = s3c2440_plls12_add,
+};
+
+static int __init s3c2442_pll_12mhz(void)
+{
+ return subsys_interface_register(&s3c2442_plls12_interface);
+
+}
+arch_initcall(s3c2442_pll_12mhz);